Current trends show that UMTS network and WLAN will co-exist and work together to support more users with higher data rate services over a wider area. However, this integration invokes many challenges such as mobility management and handoff decision making. Vertical handoff is switching process between heterogeneous wireless networks in a 3G/WLAN network. Vertical handoffs often fail due to the...

Mobile IP provides mobility support for hosts connected to the Internet without changing their IP addresses. Route optimization strategies complement Mobile IP, to alleviate triangle routing, by informing correspondent hosts of the mobile host’s care-of address. In this paper, we propose further strategies that are compatible with route optimization and its security model. First, foreign agents...

The next-generation wireless networks are evolving toward a versatile IP-based network that can provide various real-time multimedia services to mobile users. Two major challenges in establishing such a wireless mobile Internet are support of fast handoff and provision of quality of service (QoS) over IP-based wireless access networks. In this article, a DiffServ resource allocation architectur...

This paper addresses the problem of Local Mobility Management (LMM) for Mobile IPv6. First, the analysis on the conformance of the Hierarchical Mobile IPv6 (HMIPv6) to the fundamental LMM Requirements set out in the Internet Engineering Task Force (IETF) Internet Drafts, is carried out. This paper then describes three of our proposed solutions for LMM namely, “Route Tracing”, “En-Route Local Mo...

In recent years peer-to-peer communications has developed into a powerful networking model for real-time applications. Its slow adoption by the wireless community can be attributed to several factors including resource limitations of portable devices and restrictive pricing models employed by operators. The mobility management strategy proposed in [1] alleviates some of these problems by allowi...

Mobile IP is a solution for mobility on the global Internet. However, it does not extend well to highly mobile users. Mobile IP regional registration is proposed to reduce the number of location updates to the home network, and reduce the signaling delay. This paper introduces an optimal regional location management mechanism for Mobile IP that results in the minimum signaling cost. A novel dis...

This study examined the extent of implementation Student Registration and Records Management Services as fundamental elements planned academic record digitization. Utilizing a descriptive-evaluative design, simple random sampled respondents evaluated services Office (SRRMO) with researcher-made face validated questionnaire. Analyzed through frequency percentage distribution, weighted mean, Krus...

INTRODUCTION Difficult airway management is associated with an increased risk of morbidity and mortality. Several preoperative risk factors associated with airway management difficulties have been proposed; however, no clear guideline for airway assessments exists. We therefore hypothesised that Danish airway assessment was lacking uniformity. We aimed to examine whether multivariable risk asse...

Mobile IP presents an efficient solution to the wide-area host mobility problem in the Internet. Nevertheless, its home registration process introduces an overhead in the local-area mobility case. A Mobile Host is required to register with its possibly distant Home Agent, whenever it changes its point of attachment to the network. Foreign Agent hierarchies have been introduced to perform Region...

The next generation wireless network will provide not only voice but also data services. With the success of the Internet, it is widely believed that IP will become the foundation of next generation wireless networks. With the help of IETF standardization, IP-based wireless networks can benefit from existing and emerging IP related technologies and services. One key issue is how to provide unin...